2021年11月9日 · 1.1 This test method covers the measurement of refractive index, accurate to four decimal places or better, of transparent and light-colored hydrocarbons in the range of 1.3300 to 1.5000 at temperatures from 20 °C to 30 °C by manual (optical-mechanical) or automatic (digital) procedure.

Designation: D1218 − 21 Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids1 This standard is issued under the fixed designation D1218; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

2021年12月3日 · Scope*1.1 This test method covers the measurement of refractiveindex, accurate to four decimal places or better, of transparentand light-colored hydrocarbons in the range of 1.3300 to1.5000 at temperatures from 20 °C to 30 °C by manual (optical-mechanical) or automatic (digital) procedure.1.2 The manual (optical-mechanical) procedure also covers...

2022年12月11日 · This standard is issued under the Þxed designation D1218; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.04.0D on Physical and Chemical Methods. Current edition approved Nov. 1, 2007. Published January 2008. Originally approved in 1952. Last previous edition approved in 2002 as D 1218Ð02.

2025年1月10日 · ASTM D1218-21的标准全文信息,1.1 本测试方法涵盖在 20°C 至 30°C 温度下通过手动（光学-机械）测量透明和浅色碳氢化合物的折射率，精确到小数点后四位或更好，范围为 1.3300 至 1.5000。 或自动（数字）程序。 1.2 手动（光学机械）程序还包括精确到小数点后第四位或更好的折射色散测量。

2024年11月25日 · ASTM D1218-12的标准全文信息,1.1 本测试方法涵盖在 20 至 30°C 温度下通过手动（光学-机械）或手动（光学-机械）方式测量 1.3300 至 1.5000 范围内的透明和浅色碳氢化合物的折射率，精确到小数点后四位或更好。 自动（数字）程序。 1.2 手动（光学-机械）程序还包括精确到小数点后第四位或.

astm d1218-21 Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids 1.1 This test method covers the measurement of refractive index, accurate to four decimal places or better, of transparent and light-colored hydrocarbons in the range of 1.3300 to 1.5000 at temperatures from 20 °C to 30 °C by manual ...

1.1 This test method covers the measurement of refractive index, accurate to four decimal places or better, of transparent and light-colored hydrocarbons in the range of 1.3300 to 1.5000 at temperatures from 20 °C to 30 °C by manual (optical-mechanical) or automatic (digital) procedure.